4 occurrences in 4 dictionaries
Reference: Barkos
Morish
Bar'kos
Ancestor of some Nethinim who returned from exile. Ezr 2:53; Ne 7:55.
Smith
Bar'kos
(painted). "Children of Barkos" were among the Nethinim who returned from the captivity with Zerubbabel.
Ezr 2:53; Ne 7:55
(B.C. 536.)